barcode_hid_listener

Core Engine Upgrade: Lifecycle & Safety

• Added listenForAppLifecycleChanges property (defaulting to true) to BarcodeKeyboardListener to automatically pause background hardware scanning when the app enters the background (e.g. AppLifecycleState.paused), and resume it when returning to the foreground.
• Changed enableDebugLogs default in BarcodeScannerConfig from true to false for better production readiness out of the box.
• Fixed a potential crash in _onGlobalFocusChanged where context was accessed after the widget was disposed.
• Fixed a stale static reference issue in BarcodeKeyboardService where calling dispose() on a paused service left the singleton pointer intact.
• Hardened internal stream tearing down to eliminate stale subscription references on widget updates.
• Added documentation regarding BarcodeFormat.upcE detection behavior and limitations with raw HID payloads.

Core Engine Upgrade: Exclusive Handler Guard

• Added static ownership tracking (_activeInstance) to BarcodeKeyboardService.
• Guarantees that only one hardware keyboard handler is active globally at any time, preventing duplicate scan broadcasts across persistent navigation views.

Declarative UI Upgrade: autoPauseOnFocus

• Added autoPauseOnFocus property (defaulting to true) to BarcodeKeyboardListener.
• Automatically pauses background hardware scanning whenever an input text field (EditableText) gains focus.
• Integrated automatic route visibility checks (ModalRoute.isCurrent), ensuring hidden routes never steal scanner ownership.

Initial stable release of barcode_hid_listener!

Core Engine

• Two-Stage Symbology Gatekeeper: Built-in validation for global retail and logistics formats (EAN-13, UPC-A, EAN-8, UPC-E, EAN-14, Code 39).
• Temporal Deduplication: Built-in shielding to ignore accidental double-scans within configurable time windows.
• GS1 AI Normalizer: Automatically intercepts and strips the 01 Application Identifier prefix from 16-digit hardware EAN-14 shipping codes to guarantee 14-digit downstream consistency.

Architecture & Usage

• Declarative Widget Wrapper (BarcodeKeyboardListener): Drop-in UI widget with automatic lifecycle management, dynamic pausing (enabled), and FocusNode gatekeeping.
• Imperative Service (BarcodeKeyboardService): Headless Dart streams for advanced state management (Riverpod/Bloc).
• Proactive Global Focus Shield: Hardware streams safely pause when active text fields gain focus, preventing OS-level HID wedge duplication.
• Zero Dependencies: Pure Dart. Runs flawlessly on iOS, Android, Windows, macOS, Linux, and Web.